Sleeve bearing

Details Sleeve bearing Sleeve bearing

1991-10-17

1993-01-26

Footland, Lenard A.

Bearings

Rotary bearing

Plain bearing

F16C 1702

Patent

active

051817853

ABSTRACT:
A bearing halfshell for internal combustion engine connecting rods with its inner surface having a substantially constant radius of curvature from a central plane of symmetry to two portions of the inner surface located one on each side of the central plane of symmetry and on a corresponding radial plane. The radial plane forms an acute angle .alpha. with a bearing parting plane, the remaining end portions of the inner surface from the radial plane to the end of the bearing being defined by surfaces with extra relief so that the bearing thickness gradually decreases away from the central plane of symmetry in an accentuated manner as compared to the constant radius of curvature of the inner surface. Thereby, two chambers are formed in the end portions, with an eccentricity .epsilon., of the inner surface ensuring a stable film of oil between the bearing halfshell and a corresponding shaft, and reducing the operating temperature of the bearing halfshell. An elliptic contour for the eccentric surface provides good performance.

REFERENCES:
patent: 3625580 (1971-12-01), DeHart et al.
patent: 4311349 (1982-01-01), Roberts
patent: 4668107 (1987-05-01), Showalter

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